US3918752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety locking device
Assignee: Individual
•
Filing: 1974-04-11
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Granted: 1975-11-11
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Expires: 1994-04-11
Abstract
Abstract A safety locking device for enclosures having doors, panels and drawers as entrance means comprising a detent mechanism attached to the enclosure body and a safety latch mechanism attached to the movable enclosure entrance means arranged such that the detent mechanism coacts with the safety latching mechanism to permit the enclosure entrance means to be opened partially, but no further until the safety latching mechanism is properly manipulated from the outside of the enclosure once the mechanism is exposed by partial opening.
Inventors
- 👤 Adolph A Leone
- 👤 Joseph T Polese
- 👤 Richard Polese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:38
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0014; Y; Y10; Y10S; Y10S292/00; Y10S292/65; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0995; Y10T292/1014; Y10T292/1022; Y10T292/1028; Y10T292/28; Y10T292/304; Y10T292/42; Y10T292/432
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
327 words
In a safety locking device for restraining the opening of enclosures having doors, drawers, panels and the like, having a safety detent means attached to the enclosure arranged to coact with the safety latching means attached to the openable portion of said enclosure, which coaction permits partial opening of the enclosure, unlocking means arranged as a portion of said safety latching means, which unlocking means is reachable from outside the enclosure through said partial opening, whereby predetermined manipulation of said unlocking means disengages the safety detent means and permits complete opening of the enclosure access means, the improvement wherein the safety latching means comprises a backplate portion arranged to securely attach to the openable portion of the enclosure; a cover means securely attached to the said backplate portion; an interlocking slide latch member having a latch key opening therein and which interlocking slide latch member is arranged within said cover means with a portion thereof extending beyond said cover means and arranged to be manipulable from the outside of said cover means; at least one safety interlock member arranged to coact with the latch key opening portion of said interlocking slide latch member enclosed within said cover means with a manipulable portion of said safety interlock member arranged outside of said cover means; a floating slide latch member arranged within said cover means having an opening therein for receiving and engaging said slidable detent member which floating slide latch member coacts with a portion of said interlocking slide latch member such that a predetermined manipulation of both the safety interlock member and the interlocking slide latch member permits the interlocking slide latch member to coact with said floating slide latch member to release engagement of said floating slide latch member from said detent member; and bias means arranged to return the safety interlock member, interlocking slide latch member and the floating slide latch member to their initial coacting positions to effectuate resetting of the safety latching mechanism.
Claim 2
Dependent Claim
327 words
In a safety locking device for restraining the opening of enclosures having doors, drawers, panels and the like, having a safety detent means attached to the enclosure arranged to coact with the safety latching means attached to the openable portion of said enclosure, which coaction permits partial opening of the enclosure, unlocking means arranged as a portion of said safety latching means, which unlocking means is reachable from outside the enclosure through said partial opening, whereby predetermined manipulation of said unlocking means disengages the safety detent means and permits complete opening of the enclosure access means, the improvement wherein the safety latching means comprises a backplate portion arranged to securely attach to the openable portion of the enclosure; a cover means securely attached to the said backplate portion; an interlocking slide latch member having a latch key opening therein and which interlocking slide latch member is arranged within said cover means with a portion thereof extending beyond said cover means and arranged to be manipulable from the outside of said cover means; at least one safety interlock member arranged to coact with the latch key opening portion of said interlocking slide latch member enclosed within said cover means with a manipulable portion of said safety interlock member arranged outside of said cover means; a floating slide latch member arranged within said cover means having an opening therein for receiving and engaging said slidable detent member which floating slide latch member coacts with a portion of said interlocking slide latch member such that a predetermined manipulation of both the safety interlock member and the interlocking slide latch member permits the interlocking slide latch member to coact with said floating slide latch member to release engagement of said floating slide latch member from said detent member; and bias means arranged to return the safety interlock member, interlocking slide latch member and the floating slide latch member to their initial coacting positions to effectuate resetting of the safety latching mechanism.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |